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Biomedical subjects

J L Chapuis

Publications and source records attributed to J L Chapuis.

13 recordsLinked to original sources
PubMed1979

[Haemorrhagic oedema acute in neonatal skin. Immunological and ultrastructural examination (author's transl)].

There are three reports on acute haemorrhagic oedema of the skin of infants, an illness which English-speaking authors do not individualize but only regard as a clinical variety of Henoch-Schönlein purpura. Yet the features of the disease, as described in children under two years of age, are very characteristic. --Clinical feature is the sudden appearance of oedemas on face and limbs and of cocarde-like purpura with an occasional temperature. --Histological feature is the presence of leukocytoclastic vasculitis. --Immunologically the disease is characterized by the deposit of immune complexes. --Ultrastructural examination confirms the presence of leukocytoclastic vasculitis accompanied by deposit of immune complexes and of platelets. These three reports enable the authors to study the nosological aspects of the illness among the varieties of allergic vasculitis.

Acute Disease↗
PubMed1978

[Cutaneous allergy to epichlorhydrine (author's transl)].

Allergies due to epichlorhydrin are seen more and more frequently. This product, which has several uses, is one of the essential components in epoxy resins. The follow-up of six cases has enabled us to determine the optimal concentration to be used in epichlorhydrin epicutaneous tests. Since this product is frequently encountered, it ought to be integrated among the other samples in current skin tests.

Adult↗
PubMed1978

[Herpes gestationis. Ultrastructural and immunologic data, about two cases (author's transl)].

Herpes gestationis, a rare vesiculobullous dermatitis of pregnancy and the postpartal period, can be more easily identified today thanks to recent immunologic and ultrastructural researches. Comparing two new case reports with the data provided by the literature, underlines the individuality of the disease, in spite of the analogies it shows with bullous pemphigoid. Clinically, the illness only appears during pregnancy or the postpartal period and generally responds well to vitamin B6. Histologically the bullae at the dermal-epidermal junction are accompanied by extra- and intra-cellular epidermal edema and vacuolation of the basal cells. Ultrastructural examination shows that the initial alteration affects the plasmatic membrane of the basal cells. The immunologic mechanism of the disease is specific as the usual indirect in vitro immunofluorescent methods cannot reveal factor B.

Diagnosis, Differential↗
PubMed1978

[Sclero-atrophic keratodermal genodermatosis of the extremities (sclerotylosis) (author's transl)].

The authors report a new case of sclero-atrophic keratodermal genodermatosis of the extremities, which is frequently degenerative. This condition, described by Huriez et al. in 1967, is characterized by symmetric lesions of the hands and feet, sclerodactyly, keratodermia, onychopathy and hypohidrosis. This disease, which is of dominant autosomal transmission, is associated with the MNSs trait, the two genes being probably located on chromosome No. 2.

Foot↗
PubMed1977

Absence of distal interphalangeal fold causing difficulty in extending fingers.

A 13-year-old girl sought medical advice, saying that for two years it had been increasingly difficult for her to extend her little finger. An examination revealed that all her fingers, with the exception of her thumbs, had no interphalangeal fold. Her mother had less pronounced signs of the same type. This abnormality seemed to be the result of an autosomal gene with dominant transmission.

Adolescent↗
PubMed1977

[Ultrastructural and genetic aspects of epidermolysis bullosa albo-papuloidea (author's transl)].

The authors report a case of epidermolysis bullosa dystrophica and albo-papuloidea, which led them to the discovery of eight similar cases in the same family. After analysing the main symptoms, including the histological ones, they underline the ultrastructural and genetic data. This disease can be described as a dermolysis bullosa with missing fibrils, abnormal connective tissue and an intense activity of fibroblasts. As far as we know, there is no genetic relationship with the HLA system in this dominant hereditary trouble, which is believed to be transmitted through different non-allelic genes.

Adult↗
PubMedDate not supplied

[Malignant cutaneous hemangioendothelioma. Clinicopathological and ultrastructural aspects (author's transl)].

Malignant cutaneous angio-endothelioma are tumors which develop from vascular endothelium. This is a study of one case along with the data compiled from 118 previously published cases. Clinically, this rare tumor is chiefly seen before the age of twenty of after sixty. Its appearance is polymorphic and often misleading. The clinical course of this disease in adults is always fatal, however, in children 20 p. 100 of the cases are reported curable. The histological picture shows a polymorphic pattern associated with vascular channels anastomosing in a plexiform network with large lacunae surrounded by papillary vegetations and plaques of fusiform, sarcomatoid cells as well as areas of angioblastic secretory cells. The ultrastructural study confirms that the tumor originates from endothelial cells which have lost their capacity to cover the capillary walls.

Aged↗